Therefore , according to the mobility of the aircraft , the present study builts a multi - static location system , which uses the measurements detected by active or passive airborne sensors , when the aircraft is at the different positions . this study proposes two methods for locating sonobuoys . the first one is using aircraft - to - buoy slant range information 根据飞机的机动性，本文构造了使飞机到达不同点获取相同的测量信息而实现定位的多基地定位系统；依据机载有源无源探测器所能获得的测量量，提出了两种定位方法：斜距离测量定位法和基于卡尔曼滤波的方位测量定位法。
The implement of direction finding cross location and errors analysis are on the focus . the multi - warships bearings - only tracking algorithm based on direction finding cross location and distributed multi - warships bearings - only tracking are also presented . ( 6 ) the observation prerequisite of single warship bearings - only tracking is analyzed , and optimal maneuver of the observer warship is discussed 5研究了多舰纯方位跟踪的算法，把多舰纯方位跟踪分成集中式跟踪和分布式跟踪两类，并分别进行了分析比较，重点研究了测向交叉定位法的实现及误差分析，给出了基于测向交叉定位的多舰对运动辐射源的跟踪算法和基于信息融合的多舰纯方位分布式跟踪算法。
For supporting multilevel embedding domains , linear table instead of multilevel table is used to make the implementing of information tables management ( such as symbol table and constant table management ) simple and effective . to fulfill the searching algorithm of symbol table and constant table , an assistant table is introduced to solve the problem caused by the use of hash algorithm 在信息表管理方面，没有采用多级的表组织方式，而采用了线性的表组织方式，简单高效地实现了对作用域多层嵌套的支持；在表的查找算法的实现中，通过辅助表的引入，解决了符号表和常量表的顺序填写法与hash算法中表项记录的hash函数定位法之间的矛盾这一难点。
Whether there is damage in composite material or not is determined by four methods : the damage detection method based on extreme value theory , the damage detection method based on ellipse technique , the damage detection method based on four points arch technique and the damage detection method based on nerve net 研究四种损伤定位方法的原理,即:基于极值理论的损伤定位方法、基于椭圆技术的损伤定位方法、基于四点圆弧定位法的损伤定位方法、基于神经网络技术的损伤定位方法。
4 . through our research , the whole measuring scheme is finalized for pulse - counting method with analog intervene chosen to measure distance , the differential coefficient method based on the least - squares curve fitting based on power functions chosen to measure velocity and qd optical spot location method chosen to measure angle 4 .通过研究,最终确定了以模拟插入脉冲计数法测距,幂函数族基最小二乘曲线拟合微分法测速,四象限探测器( qd )光斑定位法测角的脉冲激光雷达整体测量方案。
Chapter 3 considers location of a stationary target . after introducing the nonlinear filtering technique of particle filtering , location algorithm is implemented by particle filtering . on the base of fusing information of bearing and distance , a fast passive location algorithm based on particle filter is got 在第三章里,在简单介绍了测向定位的扩展卡尔曼算法之后,主要研究了一种全新的非线性滤波技术-粒子滤波,并在此基础了提出了基于粒子滤波的测向定位法和快速定位法。
